reduce edges recalculation when enabled

src/kiri/app/widget.js

@@ -130,10 +130,16 @@ class Widget extends WidgetCore {
         }
     }
 
-    /**
-     * Set edge rendering
-     */
     setEdges(set) {
+        clearTimeout(this._setimer);
+        if (set === true && this.outline) {
+            this._setimer = setTimeout(() => this._setEdges(set), 10);
+        } else {
+            this._setEdges(set);
+        }
+    }
+
+    _setEdges(set) {
         if (!(this.api && this.api.conf)) {
             // missing api features in engine mode
             return;
@@ -145,7 +151,6 @@ class Widget extends WidgetCore {
         if (this.outline) {
             mesh.remove(this.outline);
             this.outline = null;
-
         }
         if (set) {
             let dark = this.api.space.is_dark();

src/kiri/core/widget.js

@@ -442,12 +442,10 @@ class Widget {
     }
 
     _updateMeshPosition() {
-        let mesh = this.mesh,
+        let { cache, mesh, track } = this,
-            track = this.track,
+            { top, tzoff } = track,
-            tzoff = track.tzoff,
+            { x, y, z } = track.pos,
-            top = track.top,
+            tz = -tzoff;
-            tz = -tzoff,
-            { x, y, z } = track.pos;
         if (track.indexed) {
             this.mesh.rotation.x = -track.indexRad;
             z = top;
@@ -455,8 +453,12 @@ class Widget {
             this.mesh.rotation.x = 0;
             z += tz;
         }
-        mesh.position.set(x, y, z);
+        let { pos } = cache;
-        this._updateEdges();
+        if (!pos || pos.x !== x || pos.y !==y || pos.z !== z) {
+            mesh.position.set(x, y, z);
+            this._updateEdges();
+            cache.pos = { x, y, z };
+        }
     }
 
     _updateEdges() {